2015 IECC Commercial Requirements. Eric Makela, Britt/Makela Group

2015 IECC Commercial Requirements Eric Makela, Britt/Makela Group

C402 Envelope C406.2 Eff. HVAC Performance C403 Mechanical C406.3 Reduced LPD Prescriptive C404 SWH Pick One C406.4 Digital Lighting Controls C406.5 On Site Renewable Energy C406.6 Outdoor Air System C405 Lighting C406.7 Reduced Energy Use in SWH

C407 Total Building Performance C405.2 C405.3 C402.5 Air Leakage C405.4 Performance Approach C403.2 Provisions applicable to all mechanical systems Lighting Mandatory Sections C405.6 C405.7 C405.8 C404 SWH C405.9

ASHRAE 90.1 2013

2015 IECC Scope and Administration Major Changes

Construction Documents (C103) Construction Documents must be drawn to scale and include: Location and Nature of Work Equipment and Systems Lighting Fixture Schedule and Control Narrative

Inspections (C103) Construction or work for which a permit is required is subject to inspection by the code official or designated agent. Construction must be kept accessible and exposed for inspection until approved Required Inspections Footing and foundation inspection Framing and rough in inspection Plumbing rough in inspection Mechanical rough in inspection Electrical rough in inspection Final inspection

2015 IECC COMMERCIAL ENVELOPE MAJOR CHANGES

Low Energy Buildings C402.1.1 Low energy buildings, or portions of low energy buildings separated from the remainder of the building by building thermal envelope assemblies complying with this section shall be exempt from requirements of Section C402. Those with a peak design rate of energy usage less than 3.4 Btu/h x ft² (10.7 W/m²) or 1.0 watt per square foot (10.7 W/m²) of floor area Those that do not contain conditioned space Green houses

Equipment Buildings C402.1.2 Buildings that comply with the following are exempt from the building Buildings that comply with ihthe roof solar thermal envelope provisions: ii Separate buildings with floor area not more than 500ft² (50m²) Buildings intended to house electronic equipment with installed equipment power totaling not less than 7W/ft² (75W/m²) and not intended for human occupancy Buildings with a heating capacity not greater than (17,000 Btu/hr)(5kW) and a heating thermostat set point that is restricted to not more than 50 F Buildings with an average wall and roof U factor less than 0.2 in CZ1 5 and less than.12 in CZ6 8 reflectance and thermal emittance provisions for CZ1

Table C402.2 Opaque Thermal Envelope Requirements Climate Zone 1 2 3 4 Except Marine 5 and Marine 4 6 7 8 All Group R All other Group R All other Group R All Group R All Group R All Group R All Group R All other other other other other other Group R Roofs Insulation Entirely Above Deck R 20ci R 20ci R 20ci R 20ci R 20ci R 20ci R 25ci R 25ci R 25ci R 25ci R 30ci R 30ci R 35ci R 35ci R 35ci R 35ci Metal Buildings (with R 5 thermal blocks) R 19 + R 11 LS R 19 + R 11 LS R 19 + R 11 LS R 19 + R 11 LS R 19 + R 11 LS R 19 + R 11 LS R 19 + R 11 LS R 19 + R 11 LS R 19 + R 11 LS R 19 + R 11 LS R 25 + R 11 LS R 25 + R 11 LS R 30 + R 11 LS R 30 + R 11 LS R 30 + R 11 LS R 30 + R 11 LS Attic and other R 38 R 38 R 38 R 38 R 38 R 38 R 38 R 38 R 38 R 49 R 49 R 49 R 49 R 49 R 49 R 49 Walls, Above Grade Mass R 5.7ci R 5.7ci R 5.7ci R 7.6ci R 7.6ci R 9.5ci R 9.5ci R 11.4ci R 11.4ci R 13.3ci R 13.3ci R 15.2ci R 15.2ci R 15.2ci R 25ci R 25ci Metal Building R 13+ R 6.5ci R 6.5ci R 6.5ci R 13ci R 6.5ci R 13ci R 13ci R 13ci R 13ci R 13ci R 13ci R 13ci R 13ci R 19.5ci R 13ci R 19.5ci Metal framed R 5ci R 5ci R 5ci R 7.5ci R 7.5ci R 7.5ci R 7.5ci R 7.5ci R 7.5ci R 7.5ci R 7.5ci R 7.5ci R 7.5ci R 15.6ci R 7.5ci R 17.5ci Wood framed and other R 3.8ci or R 20 R 3.8ci or R 20 R 3.8ci or R 20 R 3.8ci or R 20 R 3.8ci or R 20 R 3.8ci or R 20 R 3.8ci or R 20 R 3.8ci or R 20 R 3.8ci or R 20 R 7.5ci or R 20 + R 3 8ci R 7.5ci or R 20 + R 3 8ci R 7.5ci or R 20 + R 3 8ci R 7.5ci or R 20 + R 3 8ci R 7.5ci or R 20 + R 3 8ci R 15.6ci or R 20 + R 10ci R 15.6ci or R 20 + R 10ci R 3.8ci R 3.8ci R 3.8ci R 3.8ci R 3.8ci R 10ci R 10ci Below Grade Walls Below grade wall NR NR NR NR NR NR R 7.5ci R 7.5ci R 7.5ci R 7.5ci R 7.5ci R 7.5ci R 10ci R 10ci R 10ci R 12.5ci Floors Mass NR NR R 6.3ci R 8.3ci R 10ci R 10ci R 10ci R 10.4ci R 10ci R 12.5ci R 12.5ci R 12.5ci R 15ci R 16.7ci R 15ci R 16.7ci Joist/framing i NR NR R 30 R 30 R 30 R 30 R 30 R 30 R 30 R 30 R 30 R 30 R 30 R 30 R 30 R 30 Slab on Grade Floors Unheated slabs NR NR NR NR NR NR R 10 for 24 below R 10 for 24 below R 10 for 24 below R 10 for 24 below R 10 for 24 below R 15 for 24 below R 15 for 24 below R 15 for 24 below R 15 for 24 below R 20 for 24 below Heated slabs R 7.5 for 12 below R 7.5 for 12 below R 7.5 for R 7.5 12 bl below for 12 below R 10 for 24 below R 10 for 24 below R 15 for 24 below R 15 for 24 below R 15 for 36 below R 15 for 36 below R 15 for 36 below R 20 for 48 below R 20 for 24 below R 20 for 48 below R 20 for 48 below R 20 for 48 below Opaque Doors Swinging U 0.61 U 0.61 U 0.61 U 0.61 U 0.61 U 0.61 U 0.61 U 0.61 U 0.37 U 0.37 U 0.37 U 0.37 U 0.37 U 0.37 U 0.37 U 0.37 Roll up or sliding R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75 R 4.75

Climate Zone 5 and Marine 4 Roofs All other Group R Insulation Entirely Above Deck R 25ci R 25ci Metal Buildings (with R 5 thermal blocks) R 19 + R 11 LS Attic and other R 38 R 49 Walls, Above Grade R 19 + R 11 LS Mass R 11.4ci R 13.3ci Metal Building R 13ci Metal framed R 7.5ci Wood framed and other R 3.8ci orr 20 Below Grade Walls R 13ci R 7.5ci Below grade wall R 7.5ci 75ci R 7.5ci 75ci Floors Mass R 10ci R 12.5ci Joist/framing R 30 R 30 Unheated slabs Heated slabs Slab on Grade Floors R 10 for 24 below R 15 for 36 below R 7.5ci or R 20 + R 3.8ci R 10 for 24 below R 15 for 36 below Opaque Doors Swinging U 0.37 U 0.37 Roll up or sliding R 4.75 R 4.75

C402.4 Fenestration Requirements Table C402.44 BUILDING ENVELOPE REQUIREMENTS: FENESTRATION CLIMATE ZONE 1 2 3 4 5 6 7 U factor Vertical fenestration Fixed fenestration 0.50 0.50 0.46 0.38 0.38 0.36 0.29 Operable fenestration 0.65 0.65 0.60 0.45 0.45 0.43 0.37 Entrance doors 1.10 0.83 0.77 0.77 0.77 0.77 0.77 SHGC Orientation SEW/N SEW/N SEW/N SEW/N SEW/N SEW/N SEW/N PF < 0.2 0.25/0. 33 0.25/0. 33 0.25/0. 33 0.40/0. 53 0.40/0. 53 0.40/0.53 0.45/NR 0.2 PF < 0.5 0.30/0. 0.30/0. 0.30/0. 0.48/0. 0.48/0. 0.48/0.58 NR/NR 37 37 37 58 58 PF 0.5 0.40/0. 40 0.40/0. 40 0.40/0. 40 Skylights yg 0.64/0. 64 0.64/0. 64 0.64/0.64 NR/NR U factor 0.75 0.65 0.55 0.50 0.50 0.50 0.50 SHGC 0.35 0.35 0.35 0.40 0.40 0.40 NR

Vertical Fenestration Requirement C402.4.1 Prescriptive (Max area) Percentage of Vertical Fenestration Area to Gross Wall Area Allowed up to 30% maximum of above grade wall area In Climate Zones 1 6, up to 40% maximum of above grade wall area permitted with daylight controls

Increased Vertical Fenestration with Daylighting Controls C402411 Daylighting Controls C402.4.1.1 Up to 40% vertical fenestration area allowed in Climate zones 1 6 if: No less than 50% of the net floor area is within ihi a daylight zone in buildings 2 stories or less No less than 25% of the net floor area is within a daylight zone in buildings with 3 or more stories Daylight responsive controls are installed in daylight zones VT of vertical fenestration is 1.1 times SHGC Exception: Fenestration that is outside the scope of NFRC 200 isn t required to comply with VT

Minimum Skylight Fenestration Area C402.4.2 In certain types of enclosed spaces > 2,500 ft² directly under a roof with not less than 75% of the ceiling area with a ceiling height > 15 ft total daylight zone under skylights to not be < half the floor area and must provide either A minimum skylight area to daylight zone under skylights of not less than 3% where all skylights have a VT of at least 0.40 040OR A minimum skylight effective aperture of at least 1% Exceptions Climate zones 6 8 Spaces with LPDs < 0.5 W/ft2 Documented shaded spaces Daylight area under rooftop monitors is > 50% of floor area Spaces where total area minus area of daylight zones adjacent to vertical fenestration is less than 2,500ft² and where lighting is controlled per C405.2.5

I d Sk li h Increased Skylight SHGC I d Sk li h U Increased Skylight U Factor C402.4.3.1 C402.4.3.2 In Climate Zones 1 6, I Cli t Z 16 skylights above daylight zones with daylight responsive controls are permitted a maximum SHGC of 0.60 SHGC of 0.60 Skylights above daylight Sk li ht b d li ht zones with daylight responsive controls are permitted a maximum U factor of 0.75 in Climate Zones 4 8 Zones 4 8

Mandatory Requirements Thermal envelope air leakage Air barriers Fenestration air leakage Rooms containing fuel burning appliances Doors and access openings to shafts, chutes, stairways and elevator lobbies Air intakes, exhaust openings, stairways and shafts Loading dock weatherseals Vestibules Recessed lighting

Air Barriers and Construction C402.5.1 and C402.5.1.1 Air barrier requirements: Placement allowed Inside of building envelope Outside of building envelope Located within assemblies composing envelope OR Any combination thereof

Air Barrier Compliance Options C402.5.1.2 Testing Three ways to comply with air barrier requirements Materials Assemblies

Air Barrier Materials (Compliance) C402.5.1.2.1 Materials Materials with air permeability 0.004 cfm/ft² under pressure differential of 0.3 03in. w.g. when tested in accordance with ASTM E 2178 comply with materials provision. The following materials meet this requirement:

Materials Plywood Oriented strand board. Extruded polystyrene insulation board Foil back polyisocyanurate insulation board. Closed cell spray foam with minimum density of 1.5 pcf Thickness (Minimum) 3/8 in. 3/8in ½ in ½ in 1 1/2in Open cell spray foam with density between 0.4 and 1.5 pcf Exterior or interior gypsum board Cement board Built up roofing membrane 4.5 in ½ in ½ in Modified bituminous roof membrane Fully adhered single ply roof membrane Portland cement/sand pargeor gypsum plaster 5/8 in Cast in place and precast concrete Fully grouted concrete block masonry Sheet metal or aluminum Solid or hollow masonry constructed of clay or shale masonry units

Air Barrier Assemblies (Compliance) C402.5.1.2.2 Assemblies Assemblies of materials and components (sealants, tapes, etc.) with average air leakage 0.04 004 cfm/ft2 under pressure differential of 0.3 in. w.g. tested in accordance with ASTM E 2357, 1677 or 283 comply with assemblies provision. These following assemblies meet this requirement: Concrete masonry walls coated with either one application of block filler or two applications of a paint or sealer coating Masonry walls constructed of clay or shale masonry units with a nominal width of 4 in or more Portland cement/sand parge, stucco or plaster minimum ½ thick

Air Barrier Building Testing Alternative C402.5 Thermal envelope of buildings must comply witheither the materialsorassemblies assemblies provision OR be tested in accordance with ASTM E 779 at a pressure differential of 0.3 inch water gauge or equivalent method approved by code official Building thermal envelope with a tested air leakage rate of 0.40 cfm/ft² complies with air leakage requirements

Air Leakage of Fenestration C402.5.2 Fenestration Assembly Maximum Rate (cfm/ft²) Test Procedure Windows, sliding glass doors and swinging doors Skylights with condensation weepage openings 0.20 AAMA/WDMA/CSA 101/I.S.2/A440 or NFRC 400 0.30 Skylights all other 0.20 Curtain walls and storefront glazing 0.06 Commercial glazed swinging 1.00 entrance doors Revolving doors 1.00 NFRC 400 or ASTM E283 at 1.57 psf Garage doors 0.4 ANSI/DASMA 105, NFRC 400, or Rolling doors 1.00 ASTM E283 at 1.57 psf High speed doors 1.30 Exceptions Field-fabricated fenestration assemblies Fenestration in buildings that comply with the air barrier testing alternative

2015 IECC COMMERCIAL MECHANICAL MAJOR CHANGES

Table C403.2.3(2) Mandatory EQUIPMENT TYPE SIZE CATEGORY SUBCATEGORY OR MINIMUM TEST PROCEDURE RATING EFFICIENCY CONDITION Air cooled (Cooling mode) < 65,000 Btu/h Split system 13.0 SEER (before Jan. 1, 2016) 14.0 SEER (as of Jan. 1, 2016) Single package 13.0 SEER (before Jan. 1, 2016) 14.0 SEER (as of Jan. 1, 2016) 65,000 Btu/h and < Split system and single 11.0 EER (before Jan. 1, 135,000 Btu/h package 2016) 11.2 IEER (as of Jan. 1, 2010) 135,000 Btu/h and < 240,000 Btu/h 240,000 Btu/h Split system and single package Split system and single package 9.3 EER (before Jan. 1, 2010) 10.6 EER (as of Jan. 1, 2010) 9.0 EER 9.2 IPLV (before Jan. 1, 2010) 9.5 EER 9.2 IPLV (as of Jan. 1, 2010) AHRI 210/240 AHRI 340/360 Through the Wall (Air <30,000 Btu/h Split System 10.9 SEER (Before January AHRI 210/240 cooled, cooling mode) 23, 2010) 12.0 SEER (as of January 23 rd 2010) Single Package 10.6 SEER (Before January 23, 2010) 12.0 SEER (as of January 23 rd 2010) Water Source (Cooling Mode) < 17,000 Btu/h 86 F Entering Water 11.2 EER AHRI/ASHRAE 13256 1 17 000 B /h d 86 F E i W 12 0 EER AHRI/ASHRAE 13256 1

Automatic Start Capabilities C403.2.4.2.3 Automatic start controls o for each HVAC system Capable of automatically adjusting daily start time to bring p y j g y g each space to desired occupied temperature immediately prior to scheduled occupancy

Economizer Fault Detection and Diagnostics C403.2.4.7 Air cooled unitary direct expansion units and VRF units equipped with an economizer must include a fault detection and diagnostics (FDD) system complyingwith the following: Outside air, supply air and return air temperature sensors must be permanently installed Temperature sensors must have an accuracy of ±2 F over the range of 40 to 80 F Refrigerant pressure sensors, where used, must have an accuracy of ±3% of full scale Unit controller must be capable of providing system status, manually initiating each operating mode and reporting faults to a fault management application FDD system must be capable of detecting air temperature sensor fault, economizer faults, damper not modulating and excess outdoor air

Enclosed Parking Garage Ventilation Controls C403.2.6.2 Enclosed parking garages used for storing or handling automobiles operating undertheir own power must employ contamination sensing devices and automatic controls configured to stage fans or modulate fan average airflow rates to < 50% of design capacity, or intermittently operatefans <20% of the occupied time or as required to maintain acceptable contaminant levels in accordance with IMC. Exceptions: Garages with total exhaust capacity <22,500cfm with ventilation systems that do not utilize heating or mechanical cooling Garages that have a garage area to ventilation system motor nameplate power ratio that exceeds 1,125125 cfm/hp and do not utilize heating or mechanical cooling

Demand Controlled Ventilation C403.2.6.1 Mandatory DCV must be provided for each zone with spaces > 500 ft² and with an average occupant load of 25 people/1000 l/ ft² f² of floor area where the HVAC system has one or more of the following: An air side economizer Automatic modulating control of outdoor air damper Demand control ventilation (DCV): a ventilation system capability that provides for the automatic reduction of outdoor air intake below design rates when the actual occupancy of spaces served by the system is less than design occupancy. A design outdoor airflow > 3,000 cfm

Energy Recovery Ventilation Systems C403.2.7 Mandatory Applies to fan systems with supply airflow rates > values in Table C40327(1) C403.2.7(1) and C403.2.7(2) When an air economizer is required, a bypass or controls that permit operation of economizer per C403.3 must be included Exhaust air recovery efficiency must be 50%

Energy Recovery Ventilation System Exceptions Where energy recovery ventilation systems prohibited by the IMC Lab fume hood system with at least one of the following: VAV hood exhaust and room supply systems capable of reducing exhaust and makeup air volume to 50% of design values Systems serving uncooled spaces and heated to < 60ºF Where > 60% of outdoor heating energy is from siterecovered or site solar energy Direct makeup (auxiliary) air supply equal to at least 75% of exhaust rate, heated no warmer than 2ºF below room setpoint, cooled to no cooler than 3ºF above room setpoint, no humidification added, and no simultaneous heating and cooling use for dehumidification control Cooling energy recovery in Climate Zones 5B, 5C, 6B Systems requiring dehumid ification that t employ energy recovery in series with the cooling coil Where largest source of air exhausted at a single location at building exterior is < 75% of design outside air flow rate Systems operating at < 20 hours per week Systems exhausting toxic, flammable, paint or corrosive fumes or dust

Energy Recovery Ventilation Systems C403.2.6 Mandatory TABLE C403.2.7(1) ENERGY RECOVERY REQUIREMENT CLIMATE ZONE 3B, 3C, 4B, 4C, 5B PERCENT (%) OUTDOOR AIR AT FULL DESIGN AIRFLOW RATE <8,000 hours per year 10% and <20% 20% and <30% 30% and <40% 40% and <50% 50% and 60% 60% and < 70% DESIGN SUPPLY FAN AIRFLOW RATE (cfm) 70% and 80% 80% NR NR NR NR NR NR 5000 5000

Energy Recovery Ventilation Systems C403.2.6 Mandatory TABLE C403.2.7(1) ENERGY RECOVERY REQUIREMENT CLIMATE ZONE PERCENT (%) OUTDOOR AIR AT FULL DESIGN AIRFLOW RATE 8,000 hours per year 10% 20% 30% 40% 50% 60% and and and and and 60% and < <20% <30% <40% <50% 70% DESIGN SUPPLY FAN AIRFLOW RATE (cfm) 70% and 80% 80% 1A, 2A, 3A, 4B, 2,500 2,000 1,000 500 >0 > 0 > 0 > 0 5B

Kitchen Exhaust Systems C403.2.8 Mandatory Replacement air introduced directly into exhaust hood cavity must not be > 10% of hood exhaust airflow rate. Conditioned supply air delivered to any space must not exceed the greater of: Ventilation rate required to meet the space heating or cooling load Hood exhaust flow minus availabletransfer airfromadjacent adjacent space Where total kitchen hood exhaust airflow rate is > 5,000cfm, each hood must be a factory built commercial exhaust hood Each hood must comply with one of the following: Not < 50% of replacement air may be transfer air that would be exhausted Demand ventilation systems on not <75% of the exhaust air that are capable of not < a 50% reduction in exhaust and replacement air system airflow rates Listed energy recovery devices with a sensible heat recovery effectiveness of not <40% on not <50% of total exhaust airflow Exception: Where not <75% of all replacement air is transfer air that would otherwise be exhausted

Duct and Plenum Insulation and Sealing C403.2.9 Mandatory Required dfor Supply and Rt Return Ducts and Plenums Ducts Located inunconditioned Space R6 Insulation Ducts Located Outside the Building Envelope R8 Insulation in CZ 1 4 and R12 in CZ 5 8 Located in Envelope Assembly Must Be Separated from Building Exterior with R8 Insulation in CZ 1 4 and R12 in CZ 5 8 Exceptions DuctsLocated within Equipment Maximum Design Temperature Difference (Interior Exterior) is < 15 F

Piping Insulation C403.2.10 Mandatory All piping serving heating or cooling systems must be insulated in accordance with Table C403.2.10 Minimum Pipe Insulation (thickness in inches) Fluid Operating Insulation Conductivity Nominal Pipe or Tube Size (inches) Temperature Range Conductivity Mean Rating and Usage ( o F) * in/(h*ft 2 * o o 4 to Btu F) Temperature, F < 1 1 to <1 ½ 1½ to < 4 < 8 8 > 350 0.32 0.34 250 4.5 5.0 5.0 5.0 5.0 251 350 0.29 0.32 200 3.0 4.0 4.5 4.5 4.5 201 250 0.27 0.30 150 2.5 2.5 2.5 3.0 3.0 141 200 0.25 0.29 125 1.5 1.5 2.0 2.0 2.0 105 140140 021028 0.21 0.28 100 10 1.0 10 1.0 15 1.5 15 1.5 15 1.5 40 60 0.21 0.27 75 0.5 0.5 1.0 1.0 1.0 <40 0.20 0.26 50 0.5 1.0 1.0 1.0 1.5

Exceptions: Piping Insulation Exceptions C403.2.10 Piping internal to HVAC equipment (including fan coil units) factory installed and tested Piping for fluid in temperature range 60 < temp < 105 F Piping for fluid not heated or cooled by electricity or fossil fuels Strainers, control valves, and balancing valves associated with piping 1 in diameter Direct buried piping for fluids 60 F

Mechanical Systems Commissioning and Completion C403.2.11 Mandatory HVAC Commissioning Applies to buildings with a total building equipment capacity 480,000 Btu/h cooling capacity, or 600,000 Btu/h heating capacity Requires: Commissioning plan Systems adjusting and balancing Functional performance testing Equipment Controls Economizers Preliminary commissioning report Construction documents and O&M Manuals Final commissioning report and air balancing report

Simple HVAC Systems & Equipment C403.3 Must include economizers dependent on climate zone Capable of providing 100 percent outdoor air even if additional mechanical cooling is required (integrated economizer) Must provide a means to relieve excess outdoor air

Fractional hp Fan Motors C403.4.4.4 Motors for fans not < 1/12 hp and <1 hp must: Be electronically commutated motors OR The use of belt driven fans to sheave adjustments for airflow balancing instead of a varying motor speed is permitted. Have a minimum efficiency of 70% AND Have the means to adjust motor speed for either balancing or remote control Exceptions: Motorsin the airstream within fan coils and terminal units that only provide heating to the space served Motors in space conditioning equipment that comply with Section 403.2.3 or C403.2.12 Motors that comply with Section C405.8

Refrigeration Systems C403.2.14.17 Refrigeration Equipment Performance Sets maximum kwh/day for the following type of refrigeration equipment Commercial refrigeration e.g refrigerators and freezers with solid or transparent doors Commercial refrigerators and freezers Walk in Coolers, freezers, refrigerated warehouse freezers Automatic door closers Minimum envelope insulation levels Double or triple pane glass with inert gas or heat reflective treated glass for reachin doors Fan motor requirements for evaporator and condenser motors High efficacy lighting Refrigerated Display Cases Lights controlled by automatic time switch or occupancy sensor Temperature based defrost termination and anti sweat controls

2015 IECC SERVICE WATER HEATING MAJOR CHANGES

Efficient Heated Water Supply Piping C404.5 Sets maximum pipe length from the hot water source to the termination of the fixture supply pipe. Maximum allowable pipe length method Based on termination type Maximum allowable pipe volume method Sets the maximum volume of water between the heated water source and the fixture based on fixture type Public lavatory faucet not more than 2 ounces Other plumbing fixtures not more than 0.5 gallons

Demand Recirculation Controls C404.7 A demand recirculation water system is a water Pumps must have controls distribution system with one or more recirculation that: pumps that pump water from a heated water Start the pump upon receiving a signal from the action of a user of a fixture or supply pipe back to the appliance, sensing the presence of a heated water source user of a fixture or sensing the flow of through a cold water hot or tempered water to a fixture supply pipe. fitting or appliance Limit the temperature of the water enteringthe the cold water pipingto 104 F

2015 IECC COMMERCIAL LIGHTING REQUIREMENTS MAJOR CHANGES

What s Covered Under Electrical Power and Li h i S R i? Lighting Systems Requirements? Mandatory Interior Lighting requirements Required Controls Wattage/Efficiency Limits Interior Lighting Power Allowances (watts/ft2) Exterior Lighting Controls Required Controls Lamp Efficiency Exterior Lighting Power Allowances (watts/ft2) Electric Metering

Interior Lighting Controls C405.2 Lighting systems must have the following controls: Occupant sensor controls (C405.2.1) Time switch controls (C405.2.2) Daylight responsive controls (C405.2.3) Specific application controls (C405.2.4) Exterior lighting controls (C405.2.5) Exemptions: Security or emergency areas that must be continuously lighted Interior exit stairways, interior exit ramps and exit passageways Emergency egress lighting that is normally off

Occupant Sensor Controls C405.2.1 The following space types must have occupantsensor controls installed to control lights: Classrooms/lecture/training rooms Conference/meeting/multipurpose rooms Copy/print rooms Lounges Employee lunchand breakroomsrooms Private offices Restrooms Storage rooms Janitorial closets Locker rooms Other spaces 300ft² or less that are enclosed by floor to ceiling height partitions Warehouses Occupant sensors for all spaces except warehouses must: 1. Automatically turn off lights within 30 minutes of all occupancies leaving space 2. Be manual on or controlled dto automatically turn lighting on to not more than 50% power 3. Include manual control to allow occupants to turn lights off In warehouses, Lighting in aisleways and open areas must be individually controlled with occupant sensors that automatically reduce lighting i power by >50% when areas are unoccupied

Time switch Control Function C405.2.2 Each area that is not provided with occupant sensor controls must have time switch controls Exceptions: Automatic controls are not required in sleeping areas, spaces where patient care is directly provided, spaces where auto lighting would endanger safety or security, lighting intended for continuous operation, shop and laboratory classrooms Time switch Control Function (C405.2.2.1) Each space with time switch controls must also have a manual control for lighting reduction and include an override switching device that: Has a minimum 7 day clock Is capable of being set for 7 different day types/week Incorporates an automatic holiday shutoff Hasprogram backup capabilities Permits controlled lighting to be on for less than 2 hours Controls lighting for areas <5,000 ft² Exceptions to Time switch Control Functions: 1. Within malls, arcades, auditoriums, singletenant retail spaces, industrial facilities and arenas the time limit may be greater than 2 hours if override switch is captive key device and may control area >5,000 ft² and <20,000 ft² 2. Where provided with manual control, the following are not required to have lighting reduction control: spaces that have only 1 luminaire with rated power <100W; spaces that use less than 0.6 W/ft²; corridors, equipment rooms, public lobbies, electrical or mechanical rooms

Light Reduction Controls must allow the occupant to reduce connected lighting Interior Lighting Control C405.2.2.2 Light Reduction Controls By at least 50% In a reasonably uniform illumination pattern Lighting reduction must be achieved by oneof of the following: Controlling all lamps or luminaires Dual switching Switching the middle lamp Exception: Light reduction controls not required luminaires independently of the in daylight zones with daylight responsive outer lamps controls complying with Section C405.2.3. Switching each luminaire or lamp

Daylight Responsive Controls C405.2.3 Daylight responsive controls must be provided to control electric lights within daylights zones in: Spaces with total of more than 150W of general lighting within sidelight daylight zones Spaces with total of more than 150W of general lighting within toplight daylight zones Daylight Responsive Control Function C405.2.3.1 Daylight responsive controls must comply with the following: Lights in toplight daylight zones controlled independently of lights in sidelight daylight zones Daylight responsive controls calibrated from within ihi Calibration mechanisms readily accessible Where located in offices, classrooms, laboratories and library reading rooms, daylight responsive controls must dim lights continuously from full lllight output tt to < 15% of full lllight output t Capable of a complete shutoff of all controlled lights Lights in sidelight daylight zones facing different cardinal orienations must be controlled independently of each other Exception: Up to 150W in each space permitted dto be controlled together with lighting in a daylight zone facing different cardinal direction

Specific Application Controls C405.2.4 Specific application controls must be provided as follows: Display and accent lighting, g lighting gin cases used for display, lighting for nonvisual applications and lighting equipment for sale or demonstration must be controlled by a dedicated control that is independent of other lighting within the room or space Supplemental task lighting must have a control device integral to the luminaires or be controlled by a readily accessible wall mounted control device Hotel sleeping units andsuites must have master control device capable of auto shutoff within 20 minutes of all occupants leaving room Exception: Lighting and switched receptacles controlled by captive key systems

Interior Lighting Power C405.4.2 Two methods to determine allowance: Building Area Method Floor area for each building area type x value for the area area defined as all contiguous spaces that accommodate or are associated with a singlebuildingareatypeas as perthe table When used for an entire building, each building area type to be treated as a separate area Space by Space Method Floor area of each space x value for the area Then sum the allowances for all the spaces Tradeoffs among spaces are allowed

Building Area Method Table (Partial) Table C405.4.2(1) Interior Lighting Power allowances: Building Area Method Building Area Type LPD (w/ft2) Automotive facility.80 Convention Center 1.01 Courthouse 1.01 Dining: Bar lounge/leisure 1.01 Dining: Cafeteria/fast food 0.9 Dining: i Family 095 0.95 Dormitory 0.57 Exercise Center 0.84 Fire Station 0.67 Gymnasium 0.94 Health Care Clinic 0.90 Hospital 1.05 Hotel/Motel 0.87 Library 119

Space By Space Method Table (Partial) Atrium First 40 ft in height Common Space By Space Types Atrium Above 40ft in height Audience/seating area For Auditorium For Performing Arts Theatre For Motion Picture Theatre Class Room/Lecture/Training Conference/Meeting/Multipurpose Corridor Dining Area In a penitentiary In a facility for the visually impaired Bar/Lounge/Leisure Dining Family Dining Area Table C405.4.2(2) Interior Lighting Power Allowances: Space By Space method LPD (w/ft2) 0.03 per ft. in total height 0.40 + 0.02 per ft. in total height 0.63 2.43 1.14 1.24 1.23 0.66 0.96 1.90 1.07 Family Dining Area 089 0.89 Electrical/Mechanical 0.95 Food Preparation 1.21 Laboratory for Class Rooms 1.43

Additional Retail Lighting Power Allowance Table C405.5.2(2) Footnotes Additional Interior Lighting Power Allowance = 500 watts + (Retail Area 1 x 0.6 W/ft2) + (Retail Area 2 x 0.6 W/ft2) + (Retail Area 3 x 1.4 14W/ft2) + (Retail Area 4 x 2.5 W/ft2), Where: Retail Area 1 = the floor area for all products not listed in Retail ilarea 2, 3 or 4. Retail Area 2 = the floor area used for the sale of vehicles, sporting goods and small electronics. Retail ilarea 3 = the floor area used for the sale of furniture, clothing, cosmetics and artwork. Retail Area 4 = the floor area used for the sale of jewelry, crystal, and china.

Electrical Transformers C405.7 Electrical transformers must meet the minimum efficiency requirements of Table C405.7 as tested in accordance with DOE 10 CFR 431 and verified through certification under an approved certification program or data furnished by the manufacturer. Exceptions: Transformers that meet the Energy Policy Act of 2005 exclusions based on the DOE 10 CFR 431 definition of special purpose applications Transformers that meet the Energy Policy Act of 2005 exclusions that are not to be used in general e purpose pose applications based on information ato provided po in DOE 10 CFR 431 Transformers that meet the Energy Policy Act of 2005 exclusions with multiple voltage taps where the highest tap is at least 20% > than lowest tap The following transformers: Di Drive, Rectifier, Auto transformers, t Uninterruptible tibl power system, Impendance, Regulating, Sealed and nonventilating, machine tool, welding, grounding and testing.

Electrical Motors C405.8 Electrical motors must meet the minimum efficiency requirements of Tables C405.8(1) through C405.8(4) when tested and rated in accordance with the DOE 10 CFR 431. The efficiency will be verified through certification under an approved certification program, or, where a certification program does not exist, the equipment efficiency ratings shall be supported by data furnished by the motor manufacturer.

Vertical and Horizontal Transportation Systems and Equipment C405.9 Elevator Cabs (C405.9.1) For the luminaires in each elevator cab, not including signals and displays, the sum of the lumens divided by the sum of the watts must be > 35 lumens per watt Ventilation fans in elevators that do not have their own air conditioning system must not consume more than 0.33 watts/cfm at max rated speed of fan. Controls will de energize ventilation fans and lighting systems when elevator is stopped, unoccupied and with its doors closed for over 15 minutes. Escalators and Moving Walks (C40592) (C405.9.2) Must comply with ASME A17.1/CSA B44 Must have automatic controls configured to reduce speed to the minimum permitted Regenerative Drive (405.9.2.1). Anescalator designed either for one way down operation only or for reversible operation shall have a variable frequency regenerative drive that supplies electrical energy to the building electrical system when escalator is loaded with passengers whose weight > 750 pounds

2015 IECC COMMERCIAL ADDITIONAL REQUIREMENTS

Additional Efficiency Requirements One Additional Efficiency Feature Must Be Selected to Comply with the IECC More efficient HVAC Reduced lighting power density Enhanced lighting controls On site renewable energy Dedicated outdoor air system High efficiency SWH High Efficiency HVAC Onsite Renewables

More Efficient HVAC Equipment Performance C406.2 Equipment must exceed minimum efficiency requirements listed in Tables C403.2.3(1) through C403.2.3(7) by 10% in addition to requirements of Section C403 Where multiple performance requirements areprovided, equipment must exceed all requirements by 10% Variable refrigerant flow systems must exceed ASHRAE 90.1 by 10% Equipment not listed in table is limited to 10% of the total building system capacity High Efficiency HVAC

Reduced Lighting Power Density C406 3 C406.3 Total interior lighting power of building must be determined using 90% of lighting power values specified in Tables C405 4 2(1) times the floor area C405.4.2(1) times the floor area for building types OR by using 90% of the interior lighting power allowance calculated by ll l l db the space by space method

Enhanced Digital Lighting Controls C406.44 Interior lighting in the building must have the following controls: Luminaires must be capable of continuous dimming Luminaires must be capable of being addressed individually Not more than 8 luminaires i may be controlled dtogether th in a daylight zone Fixtures must be controlled through a digital control system Construction documents must include submittal of a Sequence of Operations Functional testing of lighting controls must comply with Section 408

On Site Renewable Energy C406.5 Total minimum ratings of on site renewables must comply with one of the following Provide not less than 0.5 watts per square foot of conditioned floor area Provide 3 percent of the energy used within the building for building mechanical and service water heating equipment and lighting regulated in Chapter 4

Dedicated Outdoor Air Systems C406.6 Buildings covered by Section C403.4 shall be equipped with an independent ventilation system designed to provide > the minimum 100% outdoor air to each occupied space. Ventilation system must be capable of total energy recovery HVAC system must include supply air temperature controls that automatically reset supply air temperature in response to building loads or outdoor air temperatures Controls must reset the supply air temperature at least 25% of the difference between the design supply air temperature and design room air temperature.

Reduced Energy Use in SWH C406.7 Buildings must be of the following types to use this compliance option: Group R 1: Boarding houses, hotels or motels Group 1 2: Hospitals, psychiatric hospitals and nursing homes Group A 1: Restaurants and banquet halls or buildings containing food preparation areas Group F: Laundries Group R 2: Buildings with residential occupancies Group A 3: Health clubs and spas Buildings showing a service hot water load of 10% or more of total building energy loads Load Fraction (C406.7.1) Building SWH system must have one or more of the following that are sized to provide not less than 60% of hot water requirements or sized to provide 100% of hot water requirements if the building otherwise complies with C403.4.7: Waste heat recovery from SWH, heat recovery chillers, building equipment, process equipment, or a combined heat and power system Solar water heating systems

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